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Sharnoff Photos
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Environment North America:
Air Pollution

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Humans and Nature

california smog

Smog fills California's Central Valley as seen from Yosemite National Park.

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A freeway in Berkeley, California. "Freeways" are not really free, of course, since they create expensive impacts on the environment and on people's health.

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A pulp mill in Sitka, Alaska, now closed. It was responsible for severe pollution of both air and water, as well as being a partner in the over-logging of Alaska's coastal forests. See the two images below for an example of the impact of this pollution on the lichens that live there.

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An alder trunk with a mosaic of healthy white lichens in Sitka, Alaska, not far from the pulp mill in the previous photograph but in clean air.

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An alder trunk behind the pulp mill in Sitka, Alaska,shown in the earlier photograph. The plume of pollution coming from the mill has killed all the lichens.

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